ATxmega32A4U Atmel Corporation, ATxmega32A4U Datasheet - Page 194

• Manufacturer Part Number: ATxmega32A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega32A4U

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

15.7
15.8
15.9
8331A–AVR–07/11
Interrupts and events
DMA Support.
Timer/Counter Commands
The T/C can generate both interrupts and events. The Counter can generate an interrupt on
underflow, and each CMP channel for Counter A has a separate interrupt that is used for
compare.
Event will be generated for all conditions that can generate interrupts. For details on event gen-
eration and available events refer to
Timer/Counter Underflow and Compare or Capture interrupt flags can trigger a DMA transaction.
The acknowledge condition that clears the flag/request is listed in the
Table 15-1.
A set of commands can be given to the Timer/Counter by software to immediately change the
state of the module. These commands give direct control of the Update, Restart, and Reset
signals.
The software can force a restart of the current waveform period by issuing a restart command. In
this case the Counter, direction, and all compare outputs are set to zero.
A reset command will set all Timer/Counter registers to their initial values. A reset can only be
given when the Timer/Counter is not running (OFF).
Request
UNFLIF
UNFHIF
CCIF{D,C,B,A}
DMA Request Sources
Acknowledge
DMAC writes to CNTL
DMAC writes to PERL
DMAC writes to CNTH
DMAC writes to PERH
DMAC access of
CMPL{D,C,B,A}
”Event System” on page
Atmel AVR XMEGA AU
63.
Comment
Output Compare operation
Table 15-1 on page
194.
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